Saw-grinding machine.



E. E. HENRY.

SAW GRINDING MACHINE.

APPLICATION FILED NOV- 7, 1913.

1,146,705. Patented July 13, 1915.

2 SHEETS-SHEET I- WITNESSES I uwmroe %V%%I [1719726 Z1921 COLUMBIAPLANOGRAPH 60-, WASHINGTON. D. C.

E. E. HENRY.

SAW GRINDING MACHINE.

APPLICATION FILED NOV. 7. I9I3.

1,146,705. Patented July 13, 1915.

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ATTORNEYS the following is a full, clear,

EUGENE n. HENRY, or nsronraonneou, assreuon or ONE-HALF TO CHARLESDURAN, or BELLINGHAM, wnsnmeron.

SAW-GRINDING MACHINE.

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To all whom it may concern Be it known that I, EUGENEE. HENRY, a citizenof the United States, anda resident of Astoria, in the, county ofClatsopand State of Oregon, have invented anew and Improved Saw-GrindingMachine, of which and exact description. 1

This invention relates to improvements in saw grindingmachines, and hasfor an obect to provide-an improved structure which may be used forgrinding or sharpening various kinds of saws.

Another object of the invention is to provide a saw grinding devicewhich by a back and forth movement will feed the grinding device forwardso that the same may be brought successively into engagement, with therespectiveteeth of the saw.

A. still further object ofqthe invention is to provide a grinding devicefor swaged saws which may beapplied to a saw without removing. the same,and which will grind an inserted tooth equally with ,anoriginal tooth.

In carrying out tion a rest or support is provided which partiallysurrounds theshaft carrying the saw.

his supporthas guiding means connected therewith bearing against the sawso that the grinding mechanism arranged thereon will be properlycentered. Pivotally con 7 nected to this supportis an arm, which in turnsupports an .abrading member, suitable means for connecting a source of,

r and power to the ,abrading member. Various power means may be.used,'asfor instance a motor may be mounted upon the swinging arm.

In the accompanying drawings-Figure 1 is a side view of agrinderembodying the invention, thefsame being shown applied; Fig. 2 is anedge'view of the structure shown in Fig. 1; Fig. 3 is aview of thevupperpart of the structure shownin Fig. 1 looking from the opposite side;Fig. 4;, isasection through Fig. 1 approximately on line 14:;

Fig. 5 is a section through Fig. 3 on line 5-5; Fig. 6, is asectionthrough Fig. on,

line 6-6. I

Referring to I the accompanying drawings by numeral indicates a saw,which may Specification of Letters Patent.

section the object of the invenstop arm 20 set screws.

, moved Patented July 13, 1915.

3 Application filed November 7, 1913. Serial No. 799,706.

1 vbe of any desired kind, as for instance a justably connecteda section6. Supporting section 6 1s prov1ded with a looped portion 7accommodating set screw 8 adapted to clamp against a stationary section5 so as to adjustably hold the vadjustable section 6 properly in place,as shown in Fig. 1. The

6 extends beyond the periphery of saw 1, and is formed with an operatinggrip or handle portion 9 co-acting with a lever 10 when the machine isin operation. Arranged on section 6 near the periphery of saw 1 is agrinding bar 11 held in place by suitable clamping members 12 which maybe screws or other means, as desired. This bar 11 engages saw 1 andspaces the section 6 a predetermined distance therefrom. Ar-

ranged on the opposite side of the saw 1 to thebar 11 is a guiding arm13 secured to standard 6 by any suitable means, as for instance bolt 14.The lower end of the arm 13 carriesan adjustable screw 15 which maybe adusted so as to prevent any material loose .motion between the bar 11 andsaw 1, and

thereby properly hold the grinding device, hereinafter fully described,in position to act correctly on the teeth of the saw;

The adjustable section 6 carries a shaft16 which is rotatably mounted inthe section 6, as clearlyshown in Fig. 6, and which carries at one endthe lever l O claimped thereto by a suitableclamping screw 17. Near theopposite end to that carrying lever 10 is a supporting, arm 18 prefer.bly rigidly connected with shaft 16, as for instance by a set screw 19.Also mounted on shaft 16 is a shown more clearly in Fig. 3. This'stoparm is rigidly clamped to shaft 16 by a suitable clamping bolt 21, thearm being suitably bifurcated for allowing this clamping action. The arm20 extends outwardly between the adjustable stops 22 and 23, whereby therocking movement of shaft 16 is limited by the position of the variousAs heretofore described arm 18 is rigidly clamped to shaft 16 so as tobe therewith when lever 10 is moved.

i This arm is formed with a journal box 24:

at its outer'endwhich is bifurcated, and which carries a clamping screw25 so as to rigidly clamp the journal box 24: to thepivotal shaft 26.The shaft 264s pivotally' connected by a bolt 27 toxthe sleeve 28inwhich is mounted a supporting tubular member 29. The sleeve 28 is.rigi'dly clamped tomember 29 by bolts 27 and 3 0 so that there is norotation of tubular-mem-j I ber 29. Tubular member 29 carries amotor 31whlch may be any'kin'd'of a motor, asfor lnstance, a water -motor,steam, comapressed air .or electric, as desired. Itwill 15 also v.be Vevident that "other power means could be applied without departing fromthe spirit of the invention, as the specific structureof themotorforms-nopart of the grinder. Byconnecting arm l8, as ust .de-

scribed, with tubular member 29, th'e tubular. member 29 andparts-carried thereby willbe moved with arm 18 pivotally around shaft16. The motor :31 carries a power shaft 32 extending through tubularmember 29. Ongshaft32 isarranged an abrading orgrinding tool 33 whichis'adapted to engage the teeth of sawl. Bolt not only assists inclamping member. 28. to tubular member 29, butalso clampsthe. guidingmember 34 (Figs. 3 and 5) rigidly'in position so as tohelp. guide theabradingmem- .'ber 33in its movement.-Also, in order the rear teeth as'thel ..grinding: stone. or

ated,.as. shownin dotted lines onFig.v 1. and then. the entiredevice ismoved until spacing member .35 engages. the next tooth. g After .thishas been done the. lever -10 is released so that thersbring 37may-.actuate1arml8 fer causing the. abradingmember 33 f to en- :ga-gethenexttooth andgrind thesame. -.It

.willbe obseryedffrom Fig. l that thefspring 37 -may1ube -connectedto-jbar 11, in. any of the apertures 38, whereby 'the tension 'thereofmaybe varied.

,.pla ced in,pos ition, .as shown-'inFiglrl VBI' {10 is moved,substantially to, the position shown in dottedlines 11in Fig 1, andthen ,the

. power. is'turnedon-for frotating'the abrading 6O I;

and grinds properly the r tooth engaged :thereby. After this has beendone lever 10 is again moved until the abrading member 4 33 disengaged,whereupon the entire l de- 66 vice is rotated and moved'forward so'that.In operation after the devicejhasf been member33. The leverflOis thenreleased the feeding device 35 may engage the next gaged by the feedingmember the entire deviceand saw may be rotated, if desired, toward theoperator, or -the lever 10 -may be released-and allowed t'o'grind in itsnew position. This action I of advancing the abradingmember is to becontinued until all of the teeth have been properly ground. It

Willbe noted also that by reason-of-theadjustability of the section 6 onthe stationary section'5' thedevice may be used on saws of differentdiameters.

lcl m i I c I 1,111 afsaw grinding device of the charac-'ter'described,a support provided .with a stationary section adapted toengage and be. supported byfthe shaft of the. saw, and an adjustablefsection for "accommodating the device to saws of'differentsizes, an abrading member, means for movably mounting; said abradin'gmember on said adj ustable section whereby the abrading member may. moveinto and out of engagement-with theteeth of the saW associated withsaidsupPQItfaDd means associated with said support for feeding the supportforward stepby step,"

tooth. After'the next tooth hasbeen en- .2. flnafidevice of the[characteridescribed, V

a' support provided with astationary section adapted to engage 'and'jbesupported by the shaft of a saw,an. adjustable sectionforaccommodating'thedevice to sawsofdifierent I sizes, an arm pivotallymounted on said adjustable section,.means for rocking said arm, atubular member rlg dly secured: to sald arm, a rotatable shaft arranged.on sai'dtubular member and projectingtherefrom,an

abra'ding tool rigidly secured to said rota table member, a [motorcarried by said tubu lar member, saidfmotor being connectedwith said;rotatable member for operating .the same, adjustable 'means for limitingthe swinging movement. of said tool itowardthe' saw, and meansforicausing a proper spacing of the saw teeth.

3. Ina saW grinding device,asupportprovlded with a gstationary sectionadapted to engage andbe supportedfby the shaft of the saw, and anadjustable section for, accommodat ng the dev ce to vsaws'jof differentsizes,

a guiding or positioningmember 'for hold- 111g said support a.predetermined distance from said saw,;mea ns co-a'cting with saidguiding or positioning member for preventing a movementrof the supportin an opposite jolirection,- a swinginggjarm arranged on saidadjustablesection, said; "swinging arm. being formed with 'agrip,designedto befen e s s mu t neo ly flwith agem of wi nsable. sec qmfqrw g a arm .awayi[fr om=;-,said saw, a; casing, arranged on said swingingarm, said casingjaccomm d ing. po er. mem r a a op shaft, connected withthe power member, a

grinding tool rigidlysecured to said" shaft for rotation thereby, aspring connected with name to this specification in the presence of saidcasing and With said guiding 0r positwo subscribing Witnesses. tioningmember for urging said swinging EUGENE E HFNRY arm toward said saw,means associated with J the arm for feeding said support forwardWitnesses: regardless of the size of the teeth. JOHN HANSEN,

In testimony whereof I have signed my EMIL MAGNISEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents, Washington, D. O.

